1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ab1d7a7ec57e73964c9317211b4ae94e2b36bbed36bb8a026a5b6ebad42f832. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/59a0307d-098d-4178-95db-e63b59a3ef54.json and https://artists.proofprofile.net/proofs/artist/59a0307d-098d-4178-95db-e63b59a3ef54.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fcde6a35f1784584da48714a3d4c822f29ccebf099c893a45bbd4c830636306. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USHM81749462.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9695a305efffcfd376446196fce2ef2ff5c2dfdfa51432bc9ec569525e91ca8c. Chain 2 (Bitcoin): anchored in block 958268 (2026-07-16T08:56:51Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USDY41996629.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31e4c589375e441b63ec90d7e4adebdfca4a812ff455796360cce468e5b43f07. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USCGH2057140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2661210e55002e250bc71309e68167868f761e4898a8b83b908c3882d7ef4dd. Chain 2 (Bitcoin): anchored in block 958346 (2026-07-17T01:47:42Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USCGH2057141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf3fdd31658a555eee0f8c7dd6151a52bfed3d90f9c4a7cfcf70aabe67c1b012. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USHM22088474.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45bd2a34ec3759daf5aeb534f3de59c962a8604a30b02ce2710552422c4d6685. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZAKB2314730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c5c19f6d0b77a40275a5f7e7a53748b1ed71ecb109bca4465a1006777fd8f65. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZPEW2501623.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20e9668a8fcda9568c53efca340f2f4ee30b77cab7eda67c02d061e9473e2260. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T12:15:48Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZPEW2501628.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc796a6352bc136e00623b524062884d8a84210e0d992cb4caaacf53713db0b73. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZPEW2501626.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x780cfee77994e8328eb80c498d09b9ba380443c721edb482a33b1e4eb35fd66a. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QT2VB2507906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e9ef8c333963a69ff8adebeff10bf4fde0a6a2b704e10e8c85fc7f8567d90c3. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QT2VB2507907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5d04ea62dc039ff31762d025baf201e9285d621b6b3d721a13e305524f11b67. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QT2VB2507908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebf77e18c69f9d7e69e7e691c36e364a57fe10fddfc2cebf79baf39462051ab3. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QT2VB2507909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a17c8a2f9babf3435d65f052ee56a469ac7bdb5a2336f9fde43d21c33dad932. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QT2VB2507910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ab60e2d806d74e71abeb934d8d79bf030b4c78387f3743376ef1fc3bb3b5e7a. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QT2VB2507911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb62c6219e0dbcf50bddb7b4bff4805607a426b909bb79e8bc29813404408efa4. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QT2VB2507912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f2872a4da519b39b939e68f53da23f72f8ec9bc79c0711366601f454a8c810a. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QT2VB2507913.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x587e6904b6f2d54c016df4d4d37ea16d3a965d5193516be3846ec934ef930bb5. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QT2VB2507914.
All Hail Danza (The Digital Scale Vintage RMX Collection)
GRAYGROUND Cypher (Feat. King Leez & Anthony Danza & Keem Hyo-Eun & pH-1 & Geo of Blue Scholars & Chaboom & DJ Wegun) (Prod. by GRAY)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc563078f9fa5f92d8704136fd3669beee39165267e44b1040653a7b43570e4ff. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/KRC711900037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bb0a5ace686726f4f1df8bafa2ec1a1e2e364c0e3cf9b849898b4f4870f2eb5. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZNWS2172936.